Bats in Utah
This report summarizes information concerning the bat fauna of Utah. It has been 20 years since the publication of Hasenyager's Bats of Utah (1980), which remains one of the most useful works on the volant mammals of the state, and much on this subject has been reported during the last two decades. During the late 1990s several ambitious field studies of bats were conducted in Utah. Prominent among these were two bat inventories carried out in northern Utah in 1994 and 1995 (Lengas 1994b, Ageiss 1996) and five in the southern part of the state during the period 1996–1999 (Foster et al. 1997, Mollhagen and Bogan 1997, Jackson and Herder 1997, Day and Peterson 1999a, Day and Peterson 1999b).
All of these surveys utilized mist-nets, involved many sampling sites, in most cases in various habitats at different elevations, and resulted in the capture and in-hand identification of large numbers of bats of many species. These studies have appreciably increased the amount of reported information that is available concerning the bats of Utah. Available information concerning the bats of Utah from published sources and from unpublished reports such as government agency documents has been used to produce this review.